Well there is great speculation about who William's parents were.
I am related to Dr. Joseph and Nancy Flora/Floro Taylor.She is most likely a relative of this William Floro.
Here is what I have on William: 1850 He is in the household of Joseph and Caroline Street in Pulaski Co. ILHis age is listed as 7.
He resided in the household of Robert Floro until he enlisted in the Civil War.
I believe Robert Floro and Nancy Floro are probably siblings.They were residing very near each other in 1850 Franklin Co. IL.Nancy and Joseph moved to Texas by 1856.Robert stayed behind and some of his descendants are still in the area.
On his pension application (this information I received from Katie Brittain (this is her line) He was given to Nancy Street in Caldonia IL then to Joseph Taylor, then to Warren Burgess, then to Abe Ray, and last to Robert Floro.Bear in mind he was elderly when he gave this statement and may have confused some of the names and their spellings.
You might go to Ancestry message boards and look for further listings.
I have been searching for years to find my Flora family which I have found spelled as Florow, Floro, Floria, Flooro, Flora, Florie.We have some speculations as to William's parents but nothing that is solid.Good Luck - Neysa